At one time Jimmy was scared of dogs because he was bitten by one. With subsequent repeated exposure to tame dogs in safe settings, however, his fear of dogs has gradually faded. Jimmy's diminishing fear of dogs best illustrates ( 3 ) Extinction
Explanation:
Extinction is a type of behavioral phenomenon that is observed both in operand conditioning and classical conditioning
Jimmy was scared of dogs because he was bitten by one,but when he was repeatedly exposed to tame dogs in safe settings he was able to over come his fear for dogs or you can say that his fear for dogs faded away . Jimmy's diminishing fear of dogs is a clear example of Extinction ( which means fading of non-reinforced conditioned response over time)